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inducer

i service a place that has negative air fireplace is gas its down drafting can anyone tell me where i can get a fan inducer that monts on the top of the b- vent on the roof to induce draft called lennox yesterday tech dept dont know nothing only said companys make them dont know who any ideas model # and serial# are closed in by marbel thanks

i told the customer we need to replace the
heated m-u-a they dont want to hear of it i told them that it would be hard to open front doors & all the heat & a/c will be heating & cooling the outside but they dont want to spend the money to replace the heated m-u-a they think its cheaper to install a inducer oh wait they must have stock in the utilies so the money they waste up the flue is no problem

Suck-O-Matic on B-vent

It's even more fun when the front door opens outwards such as in commercial buildings. Put that exhaust fan on then watch they try to pry the front door open.

Seriously, Rob is correct--fix the house and the fireplace will work. In order to install such a fan, it would have to be tested and listed for use with that particular Fp. Generic exhausts are Not approved by code.